Ferns: Add 3 sizes for coniferous forest biome

Remove flowers from coniferous forest.
Add 'dirt with coniferous litter' to farming mod overrides.

mods/default/README.txt

@@ -218,6 +218,9 @@ tobyplowy (CC BY-SA 3.0):
 CloudyProton (CC BY-SA 3.0):
   default_book_written.png, based on default_book.png by Gambit
 
+Mossmanikin (CC BY-SA 3.0):
+  default_fern_*.png
+
 Glass breaking sounds (CC BY 3.0):
   1: http://www.freesound.org/people/cmusounddesign/sounds/71947/
   2: http://www.freesound.org/people/Tomlija/sounds/97669/

mods/default/crafting.lua

@@ -1098,6 +1098,12 @@ minetest.register_craft({
 	burntime = 2,
 })
 
+minetest.register_craft({
+	type = "fuel",
+	recipe = "default:fern_1",
+	burntime = 2,
+})
+
 minetest.register_craft({
 	type = "fuel",
 	recipe = "default:paper",

mods/default/license.txt

@@ -48,6 +48,7 @@ Copyright (C) 2010-2017:
   tobyplowy
   CloudyProton
   TumeniNodes
+  Mossmanikin
 
 You are free to:
 Share — copy and redistribute the material in any medium or format.

mods/default/mapgen.lua

@@ -1640,6 +1640,26 @@ local function register_dry_grass_decoration(offset, scale, length)
 	})
 end
 
+local function register_fern_decoration(seed, length)
+	minetest.register_decoration({
+		deco_type = "simple",
+		place_on = {"default:dirt_with_coniferous_litter"},
+		sidelen = 16,
+		noise_params = {
+			offset = 0,
+			scale = 0.2,
+			spread = {x = 100, y = 100, z = 100},
+			seed = seed,
+			octaves = 3,
+			persist = 0.7
+		},
+		biomes = {"coniferous_forest"},
+		y_min = 6,
+		y_max = 31000,
+		decoration = "default:fern_" .. length,
+	})
+end
+
 
 function default.register_decorations()
 
@@ -1960,6 +1980,12 @@ function default.register_decorations()
 	register_dry_grass_decoration(0.07, -0.01, 2)
 	register_dry_grass_decoration(0.09, -0.03, 1)
 
+	-- Ferns
+
+	register_fern_decoration(14936, 3)
+	register_fern_decoration(801,   2)
+	register_fern_decoration(5,     1)
+
 	-- Junglegrass
 
 	minetest.register_decoration({

mods/default/nodes.lua

@@ -143,6 +143,10 @@ default:dry_grass_3
 default:dry_grass_4
 default:dry_grass_5
 
+default:fern_1
+default:fern_2
+default:fern_3
+
 default:bush_stem
 default:bush_leaves
 default:bush_sapling
@@ -1315,6 +1319,58 @@ for i = 2, 5 do
 end
 
 
+minetest.register_node("default:fern_1", {
+	description = "Fern",
+	drawtype = "plantlike",
+	waving = 1,
+	tiles = {"default_fern_1.png"},
+	inventory_image = "default_fern_1.png",
+	wield_image = "default_fern_1.png",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	buildable_to = true,
+	groups = {snappy = 3, flammable = 3, flora = 1, attached_node = 1},
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-6 / 16, -0.5, -6 / 16, 6 / 16, -0.25, 6 / 16},
+	},
+
+	on_place = function(itemstack, placer, pointed_thing)
+		-- place a random fern node
+		local stack = ItemStack("default:fern_" .. math.random(1, 3))
+		local ret = minetest.item_place(stack, placer, pointed_thing)
+		return ItemStack("default:fern_1 " ..
+			itemstack:get_count() - (1 - ret:get_count()))
+	end,
+})
+
+for i = 2, 3 do
+	minetest.register_node("default:fern_" .. i, {
+		description = "Fern",
+		drawtype = "plantlike",
+		waving = 1,
+		visual_scale = 2,
+		tiles = {"default_fern_" .. i .. ".png"},
+		inventory_image = "default_fern_" .. i .. ".png",
+		wield_image = "default_fern_" .. i .. ".png",
+		paramtype = "light",
+		sunlight_propagates = true,
+		walkable = false,
+		buildable_to = true,
+		groups = {snappy = 3, flammable = 3, flora = 1, attached_node = 1,
+			not_in_creative_inventory=1},
+		drop = "default:fern_1",
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "fixed",
+			fixed = {-6 / 16, -0.5, -6 / 16, 6 / 16, -0.25, 6 / 16},
+		},
+	})
+end
+
+
 minetest.register_node("default:bush_stem", {
 	description = "Bush Stem",
 	drawtype = "plantlike",

mods/farming/nodes.lua

@@ -30,6 +30,14 @@ minetest.override_item("default:dirt_with_rainforest_litter", {
 	}
 })
 
+minetest.override_item("default:dirt_with_coniferous_litter", {
+	soil = {
+		base = "default:dirt_with_coniferous_litter",
+		dry = "farming:soil",
+		wet = "farming:soil_wet"
+	}
+})
+
 minetest.register_node("farming:soil", {
 	description = "Soil",
 	tiles = {"default_dirt.png^farming_soil.png", "default_dirt.png"},

mods/flowers/mapgen.lua

@@ -84,7 +84,7 @@ end
 local function register_flower(seed, name)
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"default:dirt_with_grass", "default:dirt_with_coniferous_litter"},
+		place_on = {"default:dirt_with_grass"},
 		sidelen = 16,
 		noise_params = {
 			offset = -0.02,
@@ -94,8 +94,7 @@ local function register_flower(seed, name)
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"grassland", "deciduous_forest", "coniferous_forest",
+		biomes = {"grassland", "deciduous_forest", "floatland_grassland"},
-			"floatland_grassland"},
 		y_min = 1,
 		y_max = 31000,
 		decoration = "flowers:"..name,